/*
 * Copyright (C) 2010 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.gallery3d.data;

import com.android.gallery3d.app.GalleryApp;

class ClusterSource extends MediaSource {

	private static final String TAG = ClusterSource.class.getSimpleName();

	static final int CLUSTER_ALBUMSET_TIME = 0;
	static final int CLUSTER_ALBUMSET_LOCATION = 1;
	static final int CLUSTER_ALBUMSET_TAG = 2;
	static final int CLUSTER_ALBUMSET_SIZE = 3;
	static final int CLUSTER_ALBUMSET_FACE = 4;

	static final int CLUSTER_ALBUM_TIME = 0x100;
	static final int CLUSTER_ALBUM_LOCATION = 0x101;
	static final int CLUSTER_ALBUM_TAG = 0x102;
	static final int CLUSTER_ALBUM_SIZE = 0x103;
	static final int CLUSTER_ALBUM_FACE = 0x104;

	GalleryApp mApplication;
	PathMatcher mMatcher;

	public ClusterSource(GalleryApp application) {
		super("cluster");
		mApplication = application;
		mMatcher = new PathMatcher();
		mMatcher.add("/cluster/*/time", CLUSTER_ALBUMSET_TIME);
		mMatcher.add("/cluster/*/location", CLUSTER_ALBUMSET_LOCATION);
		mMatcher.add("/cluster/*/tag", CLUSTER_ALBUMSET_TAG);
		mMatcher.add("/cluster/*/size", CLUSTER_ALBUMSET_SIZE);
		mMatcher.add("/cluster/*/face", CLUSTER_ALBUMSET_FACE);

		mMatcher.add("/cluster/*/time/*", CLUSTER_ALBUM_TIME);
		mMatcher.add("/cluster/*/location/*", CLUSTER_ALBUM_LOCATION);
		mMatcher.add("/cluster/*/tag/*", CLUSTER_ALBUM_TAG);
		mMatcher.add("/cluster/*/size/*", CLUSTER_ALBUM_SIZE);
		mMatcher.add("/cluster/*/face/*", CLUSTER_ALBUM_FACE);
	}

	// The names we accept are:
	// /cluster/{set}/time /cluster/{set}/time/k
	// /cluster/{set}/location /cluster/{set}/location/k
	// /cluster/{set}/tag /cluster/{set}/tag/encoded_tag
	// /cluster/{set}/size /cluster/{set}/size/min_size
	@Override
	public MediaObject createMediaObject(Path path) {
		Log.d(TAG, "createMediaObject -- Path: " + path.toString());
		int matchType = mMatcher.match(path);
		String setsName = mMatcher.getVar(0);
		DataManager dataManager = mApplication.getDataManager();
		//LocalDCIM
		MediaSet[] sets = dataManager.getMediaSetsFromString(setsName);
		switch (matchType) {
		case CLUSTER_ALBUMSET_TIME:
		case CLUSTER_ALBUMSET_LOCATION:
		case CLUSTER_ALBUMSET_TAG:
		case CLUSTER_ALBUMSET_SIZE:
		case CLUSTER_ALBUMSET_FACE:
			Log.d(TAG, "createMediaObject -- cluster type is albumset ! ");
			return new ClusterAlbumSet(path, mApplication, sets[0], matchType);
		case CLUSTER_ALBUM_TIME:
		case CLUSTER_ALBUM_LOCATION:
		case CLUSTER_ALBUM_TAG:
		case CLUSTER_ALBUM_SIZE:
		case CLUSTER_ALBUM_FACE: {
			Log.d(TAG, "createMediaObject -- cluster type is album ! ");
			MediaSet parent = dataManager.getMediaSet(path.getParent());
			// The actual content in the ClusterAlbum will be filled later
			// when the reload() method in the parent is run.
			return new ClusterAlbum(path, dataManager, parent);
		}
		default:
			throw new RuntimeException("bad path: " + path);
		}
	}
}
